Could it be to do with the fact that the seat weighs about 5 times the economy seat and they probably use real china plates, steel cutlery, vast quantaties of alcohol in real bottles, not the mini ones, etc, etc. I could mention the size of some individuals derierres that fly in business class, but that would no doubt bring the fatism brigade out!
Brgd's,
N1 Vibes - given up diggin the hole - gone on an Atkins diet instead...